InvoiceFlow for ChatGPT

io.github.earthypunyapat/invoiceflow

Create invoices, clients, and Stripe payment links from any agent. 7 tools. No email or deletes.

client:ChatGPT transport:streamable-http tools:7

Install InvoiceFlow in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://invoiceflow-ten-azure.vercel.app/api/mcp

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs